Two Pro DSLRs, Different Priorities
The Canon EOS 5D Mark IV and Nikon D850 are two of the most capable full-frame DSLRs on the market, but they approach image quality and speed from different angles. The 5D Mark IV offers a 30.4MP sensor and a proven balance of resolution and low-light performance, while the D850 packs a 45.7MP back-illuminated sensor that delivers extraordinary detail. Your choice depends on whether you prioritize resolution, speed, or video features.
Resolution and Sensor Technology
The Nikon D850 has a clear resolution advantage with its 45.7MP FX-format sensor, making it a strong choice for landscape, studio, and commercial work where cropping and large prints are common. The Canon 5D Mark IV's 30.4MP full-frame sensor is no slouch and offers excellent detail for most professional work, with the benefit of slightly larger individual pixels that can help with noise performance.
- Canon EOS 5D Mark IV: 30.4MP Full Frame CMOS sensor with DIGIC 6+ processor, ISO 100-32000 (expandable to 50-102400).
- Nikon D850: 45.7MP FX-Format Back-Illuminated CMOS sensor with EXPEED 5 processor, ISO 64-25600 (expandable to 108400).
What the Specs Confirm
- Canon EOS 5D Mark IV Body: The 5D Mark IV has a 30.4MP Full Frame CMOS sensor and 4K video output, with an ISO range of 100-32000 (expandable from 50-102400). This sensor provides a solid balance of resolution and low-light capability, suitable for a wide range of professional work.
Canon EOS 5D Mark IV Body - Nikon D850 w/AF-S 24-120mm f/4G ED: The D850 features a 45.7MP FX-Format Back-Illuminated CMOS Sensor with ISO reach from 64-25600 (expandable to 108400). Higher resolution allows for larger prints and more cropping flexibility, while the base ISO of 64 gives cleaner shadows in bright conditions.
Nikon D850 w/AF-S 24-120mm f/4G ED
Speed and Autofocus
Both cameras offer professional-grade autofocus systems and respectable burst rates. The 5D Mark IV shoots at 7 fps with full AF/AE tracking, which is solid for general action and event work. The D850 matches that 7 fps, but can reach 9 fps with the optional MB-D18 battery pack and EN-EL18b/18a battery. Its 153-point AF system is one of the most advanced in any DSLR.
- Canon EOS 5D Mark IV: 7 fps continuous shooting at full resolution with full AF/AE tracking.
- Nikon D850: 7 fps continuous shooting, expandable to 9 fps with MB-D18 battery pack and EN-EL18b/18a battery. 153-point AF system.
Speed and AF Evidence
- Canon EOS 5D Mark IV Body: The EOS 5D Mark IV's high-speed readout technologies and DIGIC 6+ processor mean you can shoot at 7 fps at full resolution, with full AF/AE tracking. This burst rate is sufficient for most sports, wildlife, and event photography without sacrificing autofocus accuracy.
- Nikon D850 w/AF-S 24-120mm f/4G ED: The D850 has a 153 point auto focus system backed up by 7 frames per second continuous shooting; attach the MB-D18 Multi-Power Battery Pack to expand to 9 fps. The 153-point AF system provides extensive coverage, and the optional speed boost makes the D850 more competitive for fast action.
Video and Additional Features
Both cameras offer 4K UHD video, but with different implementations. The 5D Mark IV includes 4K video output, while the D850 provides full-frame 4K UHD video and adds features like 8K time-lapse and slow-motion Full HD at 4x/5x. The D850 also includes a tilting touchscreen, dual card slots (UHS-II SD and XQD), and SnapBridge wireless connectivity.
- Canon EOS 5D Mark IV: 4K video output, 7 fps stills, DIGIC 6+ processor.
- Nikon D850: Full-frame 4K UHD video, 8K time-lapse with silent mode, 4x/5x slow-motion in Full HD, tilting touchscreen, dual card slots (UHS-II SD and XQD), SnapBridge wireless.
Which One Should You Choose?
If maximum resolution and cropping flexibility are your priorities, the Nikon D850 is the clear winner. Its 45.7MP sensor, expandable burst rate, and advanced video features make it a versatile tool for studio, landscape, and hybrid shooters. The Canon 5D Mark IV, with its 30.4MP sensor and proven reliability, is an excellent choice for photographers who need a balanced performer for events, portraits, and general professional work, especially if you already have Canon glass. Both cameras are capable of outstanding results—your decision should be guided by your specific needs and existing system.
